Text Difference Checker
Compare original and changed text with clear line and word-level highlighting—entirely in your browser.
Original Text
The earlier or reference version
Changed Text
The newer version to compare
Comparison updates automatically after typing.
How to Use
Paste original and changed versions, choose comparison options and view, then inspect, copy, or download the highlighted diff.
Diff Legend
Green — added content
Red — removed content
Amber — changed line pair
Related Tools
See exactly what changed
Compare drafts, code snippets, configuration, contracts, and copied content. Line-level structure shows where changes occurred while word highlights pinpoint the exact edits.
Frequently Asked Questions
What is side-by-side view? +
It aligns original and changed lines in separate columns so corresponding edits are easy to scan.
What is unified view? +
It shows removed lines with a minus and added lines with a plus in one continuous result.
How does Ignore whitespace work? +
It treats repeated, leading, and trailing whitespace as equivalent during line matching.
Is my text uploaded? +
No. Comparison, copy, and diff generation run locally in your browser.
What does Download Diff create? +
It downloads a standard unified patch-style text file that can be opened in any editor.
Related Articles
Developer newsletter
Stay Ahead
Get practical developer guides, new tools, and workflow improvements without inbox noise.